import { BasicInfo, AirportFilter } from './types';
export * from './types';
declare class OurAirports {
    private basicInfo;
    private codes;
    private coordinates;
    private region;
    private references;
    private initialized;
    private searchService;
    private readonly isBrowser;
    constructor();
    /**
     * Auto-detect environment and initialize accordingly
     * This is the recommended way to initialize the library
     */
    init(): Promise<void>;
    /**
     * Initialize for Node.js environment
     * @throws {Error} If called in browser environment
     */
    initialize(): Promise<void>;
    /**
     * Initialize for browser environment
     * @throws {Error} If data loading fails
     */
    initializeAsync(): Promise<void>;
    private ensureInitialized;
    private initializeSearchService;
    /**
     * Find airport by IATA code
     * @param iataCode IATA airport code (e.g., 'PEK')
     */
    findByIataCode(iataCode: string): BasicInfo | undefined;
    /**
     * Find airport by ICAO code
     * @param icaoCode ICAO airport code (e.g., 'ZBAA')
     */
    findByIcaoCode(icaoCode: string): BasicInfo | undefined;
    /**
     * Find airports by country code
     * @param countryCode ISO country code (e.g., 'CN')
     */
    findByCountry(countryCode: string): BasicInfo[];
    /**
     * Search airports by filter conditions
     * @param filter Search criteria
     */
    searchAirports(filter: AirportFilter): BasicInfo[];
    /**
     * Get airports within a specified radius
     * @param lat Latitude in degrees
     * @param lon Longitude in degrees
     * @param radiusKm Radius in kilometers
     */
    findAirportsInRadius(lat: number, lon: number, radiusKm: number): BasicInfo[];
    /**
     * Get raw data for advanced usage
     * @returns All airport data
     */
    get data(): {
        basicInfo: {
            id: number;
            type: string;
            name: string;
            iata_code: string | null;
            ident?: string | undefined;
        }[];
        codes: {
            id: number;
            ident: string;
            iata_code: string | null;
            gps_code: string | null;
            local_code: string | null;
        }[];
        coordinates: {
            id: number;
            latitude_deg: number;
            longitude_deg: number;
            elevation_ft: number | null;
        }[];
        region: {
            id: number;
            continent: string | null;
            iso_country: string;
            iso_region: string;
            municipality: string | null;
        }[];
        references: {
            scheduled_service: "yes" | "no";
            id: number;
            home_link: string | null;
            wikipedia_link: string | null;
            keywords: string | null;
        }[];
    };
    /**
     * Check if the instance is initialized
     */
    get isInitialized(): boolean;
    /**
     * Check if running in browser environment
     */
    get isInBrowser(): boolean;
}
export { OurAirports };
export default OurAirports;